A greenish tint has been added to the image of our 'blue planet' because it is photosynthesis, performed by green organisms, that provides the nutrients for the webs-of-life that make Earth a living world. Dean Graetz Copyright CSIRO

White (2003)

Dr Mary E. White presents summaries of the sequential stages in the co-evolution of Life and the environment through geological time that have resulted in the creation of the BIOSPHERE (of which we are a part).